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annotate venv/lib/python2.7/site-packages/setuptools/dist.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 __all__ = ['Distribution']
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2
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3 import re
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4 import os
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5 import sys
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6 import warnings
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7 import numbers
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8 import distutils.log
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9 import distutils.core
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10 import distutils.cmd
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11 import distutils.dist
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12 from distutils.core import Distribution as _Distribution
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13 from distutils.errors import (DistutilsOptionError, DistutilsPlatformError,
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14 DistutilsSetupError)
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15
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16 from setuptools.depends import Require
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17 from setuptools.compat import basestring, PY2
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18 from setuptools import windows_support
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19 import pkg_resources
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20
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21 packaging = pkg_resources.packaging
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22
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23
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24 def _get_unpatched(cls):
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25 """Protect against re-patching the distutils if reloaded
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26
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27 Also ensures that no other distutils extension monkeypatched the distutils
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28 first.
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29 """
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30 while cls.__module__.startswith('setuptools'):
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31 cls, = cls.__bases__
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32 if not cls.__module__.startswith('distutils'):
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33 raise AssertionError(
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34 "distutils has already been patched by %r" % cls
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35 )
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36 return cls
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37
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38 _Distribution = _get_unpatched(_Distribution)
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39
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40 def _patch_distribution_metadata_write_pkg_info():
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41 """
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42 Workaround issue #197 - Python 3 prior to 3.2.2 uses an environment-local
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43 encoding to save the pkg_info. Monkey-patch its write_pkg_info method to
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44 correct this undesirable behavior.
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45 """
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46 environment_local = (3,) <= sys.version_info[:3] < (3, 2, 2)
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47 if not environment_local:
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48 return
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49
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50 # from Python 3.4
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51 def write_pkg_info(self, base_dir):
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52 """Write the PKG-INFO file into the release tree.
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53 """
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54 with open(os.path.join(base_dir, 'PKG-INFO'), 'w',
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55 encoding='UTF-8') as pkg_info:
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56 self.write_pkg_file(pkg_info)
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57
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58 distutils.dist.DistributionMetadata.write_pkg_info = write_pkg_info
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59 _patch_distribution_metadata_write_pkg_info()
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60
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61 sequence = tuple, list
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62
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63 def check_importable(dist, attr, value):
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64 try:
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65 ep = pkg_resources.EntryPoint.parse('x='+value)
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66 assert not ep.extras
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67 except (TypeError,ValueError,AttributeError,AssertionError):
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68 raise DistutilsSetupError(
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69 "%r must be importable 'module:attrs' string (got %r)"
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70 % (attr,value)
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71 )
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72
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73
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74 def assert_string_list(dist, attr, value):
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75 """Verify that value is a string list or None"""
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76 try:
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77 assert ''.join(value)!=value
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78 except (TypeError,ValueError,AttributeError,AssertionError):
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79 raise DistutilsSetupError(
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80 "%r must be a list of strings (got %r)" % (attr,value)
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81 )
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82 def check_nsp(dist, attr, value):
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83 """Verify that namespace packages are valid"""
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84 assert_string_list(dist,attr,value)
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85 for nsp in value:
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86 if not dist.has_contents_for(nsp):
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87 raise DistutilsSetupError(
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88 "Distribution contains no modules or packages for " +
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89 "namespace package %r" % nsp
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90 )
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91 if '.' in nsp:
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92 parent = '.'.join(nsp.split('.')[:-1])
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93 if parent not in value:
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94 distutils.log.warn(
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95 "WARNING: %r is declared as a package namespace, but %r"
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96 " is not: please correct this in setup.py", nsp, parent
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97 )
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98
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99 def check_extras(dist, attr, value):
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100 """Verify that extras_require mapping is valid"""
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101 try:
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102 for k,v in value.items():
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103 if ':' in k:
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104 k,m = k.split(':',1)
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105 if pkg_resources.invalid_marker(m):
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106 raise DistutilsSetupError("Invalid environment marker: "+m)
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107 list(pkg_resources.parse_requirements(v))
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108 except (TypeError,ValueError,AttributeError):
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109 raise DistutilsSetupError(
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110 "'extras_require' must be a dictionary whose values are "
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111 "strings or lists of strings containing valid project/version "
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112 "requirement specifiers."
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113 )
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114
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115 def assert_bool(dist, attr, value):
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116 """Verify that value is True, False, 0, or 1"""
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117 if bool(value) != value:
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118 raise DistutilsSetupError(
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119 "%r must be a boolean value (got %r)" % (attr,value)
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120 )
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121 def check_requirements(dist, attr, value):
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122 """Verify that install_requires is a valid requirements list"""
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123 try:
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124 list(pkg_resources.parse_requirements(value))
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125 except (TypeError,ValueError):
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126 raise DistutilsSetupError(
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127 "%r must be a string or list of strings "
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128 "containing valid project/version requirement specifiers" % (attr,)
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129 )
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130 def check_entry_points(dist, attr, value):
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131 """Verify that entry_points map is parseable"""
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132 try:
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133 pkg_resources.EntryPoint.parse_map(value)
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134 except ValueError as e:
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135 raise DistutilsSetupError(e)
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136
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137 def check_test_suite(dist, attr, value):
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138 if not isinstance(value,basestring):
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139 raise DistutilsSetupError("test_suite must be a string")
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140
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141 def check_package_data(dist, attr, value):
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142 """Verify that value is a dictionary of package names to glob lists"""
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143 if isinstance(value,dict):
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144 for k,v in value.items():
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145 if not isinstance(k,str): break
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146 try: iter(v)
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147 except TypeError:
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148 break
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149 else:
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150 return
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151 raise DistutilsSetupError(
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152 attr+" must be a dictionary mapping package names to lists of "
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153 "wildcard patterns"
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154 )
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155
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156 def check_packages(dist, attr, value):
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157 for pkgname in value:
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158 if not re.match(r'\w+(\.\w+)*', pkgname):
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159 distutils.log.warn(
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160 "WARNING: %r not a valid package name; please use only"
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161 ".-separated package names in setup.py", pkgname
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162 )
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163
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164
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165 class Distribution(_Distribution):
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166 """Distribution with support for features, tests, and package data
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167
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168 This is an enhanced version of 'distutils.dist.Distribution' that
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169 effectively adds the following new optional keyword arguments to 'setup()':
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170
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171 'install_requires' -- a string or sequence of strings specifying project
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172 versions that the distribution requires when installed, in the format
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173 used by 'pkg_resources.require()'. They will be installed
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174 automatically when the package is installed. If you wish to use
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175 packages that are not available in PyPI, or want to give your users an
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176 alternate download location, you can add a 'find_links' option to the
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177 '[easy_install]' section of your project's 'setup.cfg' file, and then
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178 setuptools will scan the listed web pages for links that satisfy the
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179 requirements.
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180
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181 'extras_require' -- a dictionary mapping names of optional "extras" to the
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182 additional requirement(s) that using those extras incurs. For example,
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183 this::
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184
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185 extras_require = dict(reST = ["docutils>=0.3", "reSTedit"])
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186
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187 indicates that the distribution can optionally provide an extra
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188 capability called "reST", but it can only be used if docutils and
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189 reSTedit are installed. If the user installs your package using
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190 EasyInstall and requests one of your extras, the corresponding
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191 additional requirements will be installed if needed.
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192
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193 'features' **deprecated** -- a dictionary mapping option names to
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194 'setuptools.Feature'
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195 objects. Features are a portion of the distribution that can be
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196 included or excluded based on user options, inter-feature dependencies,
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197 and availability on the current system. Excluded features are omitted
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198 from all setup commands, including source and binary distributions, so
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199 you can create multiple distributions from the same source tree.
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200 Feature names should be valid Python identifiers, except that they may
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201 contain the '-' (minus) sign. Features can be included or excluded
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202 via the command line options '--with-X' and '--without-X', where 'X' is
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203 the name of the feature. Whether a feature is included by default, and
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204 whether you are allowed to control this from the command line, is
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205 determined by the Feature object. See the 'Feature' class for more
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206 information.
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207
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208 'test_suite' -- the name of a test suite to run for the 'test' command.
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209 If the user runs 'python setup.py test', the package will be installed,
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210 and the named test suite will be run. The format is the same as
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211 would be used on a 'unittest.py' command line. That is, it is the
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212 dotted name of an object to import and call to generate a test suite.
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213
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214 'package_data' -- a dictionary mapping package names to lists of filenames
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215 or globs to use to find data files contained in the named packages.
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216 If the dictionary has filenames or globs listed under '""' (the empty
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217 string), those names will be searched for in every package, in addition
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218 to any names for the specific package. Data files found using these
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219 names/globs will be installed along with the package, in the same
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220 location as the package. Note that globs are allowed to reference
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221 the contents of non-package subdirectories, as long as you use '/' as
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222 a path separator. (Globs are automatically converted to
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223 platform-specific paths at runtime.)
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224
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225 In addition to these new keywords, this class also has several new methods
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226 for manipulating the distribution's contents. For example, the 'include()'
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227 and 'exclude()' methods can be thought of as in-place add and subtract
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228 commands that add or remove packages, modules, extensions, and so on from
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229 the distribution. They are used by the feature subsystem to configure the
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230 distribution for the included and excluded features.
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231 """
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232
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233 _patched_dist = None
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234
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235 def patch_missing_pkg_info(self, attrs):
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236 # Fake up a replacement for the data that would normally come from
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237 # PKG-INFO, but which might not yet be built if this is a fresh
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238 # checkout.
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239 #
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240 if not attrs or 'name' not in attrs or 'version' not in attrs:
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241 return
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242 key = pkg_resources.safe_name(str(attrs['name'])).lower()
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243 dist = pkg_resources.working_set.by_key.get(key)
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244 if dist is not None and not dist.has_metadata('PKG-INFO'):
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245 dist._version = pkg_resources.safe_version(str(attrs['version']))
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246 self._patched_dist = dist
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247
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248 def __init__(self, attrs=None):
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249 have_package_data = hasattr(self, "package_data")
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250 if not have_package_data:
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251 self.package_data = {}
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252 _attrs_dict = attrs or {}
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253 if 'features' in _attrs_dict or 'require_features' in _attrs_dict:
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254 Feature.warn_deprecated()
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255 self.require_features = []
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256 self.features = {}
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257 self.dist_files = []
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258 self.src_root = attrs and attrs.pop("src_root", None)
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259 self.patch_missing_pkg_info(attrs)
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260 # Make sure we have any eggs needed to interpret 'attrs'
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261 if attrs is not None:
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262 self.dependency_links = attrs.pop('dependency_links', [])
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263 assert_string_list(self,'dependency_links',self.dependency_links)
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264 if attrs and 'setup_requires' in attrs:
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265 self.fetch_build_eggs(attrs['setup_requires'])
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266 for ep in pkg_resources.iter_entry_points('distutils.setup_keywords'):
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267 if not hasattr(self,ep.name):
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268 setattr(self,ep.name,None)
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269 _Distribution.__init__(self,attrs)
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270 if isinstance(self.metadata.version, numbers.Number):
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271 # Some people apparently take "version number" too literally :)
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272 self.metadata.version = str(self.metadata.version)
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273
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274 if self.metadata.version is not None:
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275 try:
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276 ver = packaging.version.Version(self.metadata.version)
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277 normalized_version = str(ver)
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278 if self.metadata.version != normalized_version:
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279 warnings.warn(
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280 "Normalizing '%s' to '%s'" % (
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281 self.metadata.version,
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282 normalized_version,
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283 )
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284 )
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285 self.metadata.version = normalized_version
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286 except (packaging.version.InvalidVersion, TypeError):
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287 warnings.warn(
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288 "The version specified (%r) is an invalid version, this "
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289 "may not work as expected with newer versions of "
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290 "setuptools, pip, and PyPI. Please see PEP 440 for more "
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291 "details." % self.metadata.version
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292 )
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293
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294 def parse_command_line(self):
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295 """Process features after parsing command line options"""
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296 result = _Distribution.parse_command_line(self)
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297 if self.features:
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298 self._finalize_features()
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299 return result
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300
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301 def _feature_attrname(self,name):
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302 """Convert feature name to corresponding option attribute name"""
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303 return 'with_'+name.replace('-','_')
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304
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305 def fetch_build_eggs(self, requires):
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306 """Resolve pre-setup requirements"""
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307 resolved_dists = pkg_resources.working_set.resolve(
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308 pkg_resources.parse_requirements(requires),
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309 installer=self.fetch_build_egg,
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310 replace_conflicting=True,
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311 )
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312 for dist in resolved_dists:
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313 pkg_resources.working_set.add(dist, replace=True)
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314
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315 def finalize_options(self):
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316 _Distribution.finalize_options(self)
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317 if self.features:
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318 self._set_global_opts_from_features()
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319
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320 for ep in pkg_resources.iter_entry_points('distutils.setup_keywords'):
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321 value = getattr(self,ep.name,None)
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322 if value is not None:
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323 ep.require(installer=self.fetch_build_egg)
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324 ep.load()(self, ep.name, value)
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325 if getattr(self, 'convert_2to3_doctests', None):
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326 # XXX may convert to set here when we can rely on set being builtin
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327 self.convert_2to3_doctests = [os.path.abspath(p) for p in self.convert_2to3_doctests]
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328 else:
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329 self.convert_2to3_doctests = []
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330
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331 def get_egg_cache_dir(self):
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332 egg_cache_dir = os.path.join(os.curdir, '.eggs')
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333 if not os.path.exists(egg_cache_dir):
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334 os.mkdir(egg_cache_dir)
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335 windows_support.hide_file(egg_cache_dir)
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336 readme_txt_filename = os.path.join(egg_cache_dir, 'README.txt')
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337 with open(readme_txt_filename, 'w') as f:
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338 f.write('This directory contains eggs that were downloaded '
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339 'by setuptools to build, test, and run plug-ins.\n\n')
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340 f.write('This directory caches those eggs to prevent '
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341 'repeated downloads.\n\n')
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342 f.write('However, it is safe to delete this directory.\n\n')
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343
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344 return egg_cache_dir
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345
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346 def fetch_build_egg(self, req):
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347 """Fetch an egg needed for building"""
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348
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349 try:
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350 cmd = self._egg_fetcher
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351 cmd.package_index.to_scan = []
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352 except AttributeError:
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353 from setuptools.command.easy_install import easy_install
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354 dist = self.__class__({'script_args':['easy_install']})
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355 dist.parse_config_files()
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356 opts = dist.get_option_dict('easy_install')
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357 keep = (
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358 'find_links', 'site_dirs', 'index_url', 'optimize',
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359 'site_dirs', 'allow_hosts'
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360 )
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361 for key in list(opts):
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362 if key not in keep:
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363 del opts[key] # don't use any other settings
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364 if self.dependency_links:
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365 links = self.dependency_links[:]
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366 if 'find_links' in opts:
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367 links = opts['find_links'][1].split() + links
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368 opts['find_links'] = ('setup', links)
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369 install_dir = self.get_egg_cache_dir()
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370 cmd = easy_install(
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371 dist, args=["x"], install_dir=install_dir, exclude_scripts=True,
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372 always_copy=False, build_directory=None, editable=False,
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373 upgrade=False, multi_version=True, no_report=True, user=False
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374 )
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375 cmd.ensure_finalized()
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376 self._egg_fetcher = cmd
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377 return cmd.easy_install(req)
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378
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379 def _set_global_opts_from_features(self):
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380 """Add --with-X/--without-X options based on optional features"""
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381
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382 go = []
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383 no = self.negative_opt.copy()
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384
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385 for name,feature in self.features.items():
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386 self._set_feature(name,None)
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387 feature.validate(self)
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388
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389 if feature.optional:
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390 descr = feature.description
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391 incdef = ' (default)'
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392 excdef=''
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393 if not feature.include_by_default():
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394 excdef, incdef = incdef, excdef
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395
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396 go.append(('with-'+name, None, 'include '+descr+incdef))
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397 go.append(('without-'+name, None, 'exclude '+descr+excdef))
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398 no['without-'+name] = 'with-'+name
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399
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400 self.global_options = self.feature_options = go + self.global_options
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401 self.negative_opt = self.feature_negopt = no
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402
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403 def _finalize_features(self):
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404 """Add/remove features and resolve dependencies between them"""
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405
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406 # First, flag all the enabled items (and thus their dependencies)
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407 for name,feature in self.features.items():
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408 enabled = self.feature_is_included(name)
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409 if enabled or (enabled is None and feature.include_by_default()):
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410 feature.include_in(self)
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411 self._set_feature(name,1)
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412
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413 # Then disable the rest, so that off-by-default features don't
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414 # get flagged as errors when they're required by an enabled feature
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415 for name,feature in self.features.items():
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416 if not self.feature_is_included(name):
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417 feature.exclude_from(self)
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418 self._set_feature(name,0)
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419
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420 def get_command_class(self, command):
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421 """Pluggable version of get_command_class()"""
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422 if command in self.cmdclass:
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423 return self.cmdclass[command]
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424
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425 for ep in pkg_resources.iter_entry_points('distutils.commands',command):
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426 ep.require(installer=self.fetch_build_egg)
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427 self.cmdclass[command] = cmdclass = ep.load()
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428 return cmdclass
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429 else:
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430 return _Distribution.get_command_class(self, command)
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431
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432 def print_commands(self):
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433 for ep in pkg_resources.iter_entry_points('distutils.commands'):
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434 if ep.name not in self.cmdclass:
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435 # don't require extras as the commands won't be invoked
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436 cmdclass = ep.resolve()
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437 self.cmdclass[ep.name] = cmdclass
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438 return _Distribution.print_commands(self)
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439
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440 def _set_feature(self,name,status):
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441 """Set feature's inclusion status"""
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442 setattr(self,self._feature_attrname(name),status)
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443
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444 def feature_is_included(self,name):
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445 """Return 1 if feature is included, 0 if excluded, 'None' if unknown"""
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446 return getattr(self,self._feature_attrname(name))
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447
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448 def include_feature(self,name):
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449 """Request inclusion of feature named 'name'"""
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450
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451 if self.feature_is_included(name)==0:
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452 descr = self.features[name].description
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453 raise DistutilsOptionError(
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454 descr + " is required, but was excluded or is not available"
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455 )
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456 self.features[name].include_in(self)
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457 self._set_feature(name,1)
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458
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459 def include(self,**attrs):
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460 """Add items to distribution that are named in keyword arguments
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461
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462 For example, 'dist.exclude(py_modules=["x"])' would add 'x' to
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463 the distribution's 'py_modules' attribute, if it was not already
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464 there.
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465
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466 Currently, this method only supports inclusion for attributes that are
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467 lists or tuples. If you need to add support for adding to other
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468 attributes in this or a subclass, you can add an '_include_X' method,
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469 where 'X' is the name of the attribute. The method will be called with
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470 the value passed to 'include()'. So, 'dist.include(foo={"bar":"baz"})'
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471 will try to call 'dist._include_foo({"bar":"baz"})', which can then
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472 handle whatever special inclusion logic is needed.
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473 """
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474 for k,v in attrs.items():
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475 include = getattr(self, '_include_'+k, None)
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476 if include:
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477 include(v)
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478 else:
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479 self._include_misc(k,v)
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480
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481 def exclude_package(self,package):
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482 """Remove packages, modules, and extensions in named package"""
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483
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484 pfx = package+'.'
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485 if self.packages:
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486 self.packages = [
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487 p for p in self.packages
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488 if p != package and not p.startswith(pfx)
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489 ]
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490
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491 if self.py_modules:
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492 self.py_modules = [
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493 p for p in self.py_modules
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494 if p != package and not p.startswith(pfx)
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495 ]
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496
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497 if self.ext_modules:
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498 self.ext_modules = [
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499 p for p in self.ext_modules
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500 if p.name != package and not p.name.startswith(pfx)
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501 ]
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502
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503 def has_contents_for(self,package):
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504 """Return true if 'exclude_package(package)' would do something"""
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505
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506 pfx = package+'.'
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507
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508 for p in self.iter_distribution_names():
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509 if p==package or p.startswith(pfx):
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510 return True
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511
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512 def _exclude_misc(self,name,value):
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513 """Handle 'exclude()' for list/tuple attrs without a special handler"""
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514 if not isinstance(value,sequence):
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515 raise DistutilsSetupError(
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516 "%s: setting must be a list or tuple (%r)" % (name, value)
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517 )
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518 try:
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519 old = getattr(self,name)
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520 except AttributeError:
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521 raise DistutilsSetupError(
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522 "%s: No such distribution setting" % name
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523 )
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524 if old is not None and not isinstance(old,sequence):
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525 raise DistutilsSetupError(
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526 name+": this setting cannot be changed via include/exclude"
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527 )
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528 elif old:
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529 setattr(self,name,[item for item in old if item not in value])
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530
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531 def _include_misc(self,name,value):
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532 """Handle 'include()' for list/tuple attrs without a special handler"""
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533
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534 if not isinstance(value,sequence):
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535 raise DistutilsSetupError(
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536 "%s: setting must be a list (%r)" % (name, value)
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537 )
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538 try:
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539 old = getattr(self,name)
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540 except AttributeError:
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541 raise DistutilsSetupError(
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542 "%s: No such distribution setting" % name
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543 )
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544 if old is None:
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545 setattr(self,name,value)
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546 elif not isinstance(old,sequence):
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547 raise DistutilsSetupError(
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548 name+": this setting cannot be changed via include/exclude"
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549 )
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550 else:
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551 setattr(self,name,old+[item for item in value if item not in old])
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552
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553 def exclude(self,**attrs):
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554 """Remove items from distribution that are named in keyword arguments
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555
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556 For example, 'dist.exclude(py_modules=["x"])' would remove 'x' from
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557 the distribution's 'py_modules' attribute. Excluding packages uses
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558 the 'exclude_package()' method, so all of the package's contained
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559 packages, modules, and extensions are also excluded.
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560
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561 Currently, this method only supports exclusion from attributes that are
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562 lists or tuples. If you need to add support for excluding from other
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563 attributes in this or a subclass, you can add an '_exclude_X' method,
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564 where 'X' is the name of the attribute. The method will be called with
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565 the value passed to 'exclude()'. So, 'dist.exclude(foo={"bar":"baz"})'
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566 will try to call 'dist._exclude_foo({"bar":"baz"})', which can then
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567 handle whatever special exclusion logic is needed.
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568 """
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569 for k,v in attrs.items():
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570 exclude = getattr(self, '_exclude_'+k, None)
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571 if exclude:
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572 exclude(v)
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573 else:
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574 self._exclude_misc(k,v)
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575
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576 def _exclude_packages(self,packages):
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577 if not isinstance(packages,sequence):
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578 raise DistutilsSetupError(
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579 "packages: setting must be a list or tuple (%r)" % (packages,)
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580 )
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581 list(map(self.exclude_package, packages))
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582
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583 def _parse_command_opts(self, parser, args):
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584 # Remove --with-X/--without-X options when processing command args
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585 self.global_options = self.__class__.global_options
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586 self.negative_opt = self.__class__.negative_opt
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587
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588 # First, expand any aliases
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589 command = args[0]
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590 aliases = self.get_option_dict('aliases')
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591 while command in aliases:
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592 src,alias = aliases[command]
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593 del aliases[command] # ensure each alias can expand only once!
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594 import shlex
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595 args[:1] = shlex.split(alias,True)
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596 command = args[0]
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597
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598 nargs = _Distribution._parse_command_opts(self, parser, args)
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599
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600 # Handle commands that want to consume all remaining arguments
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601 cmd_class = self.get_command_class(command)
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602 if getattr(cmd_class,'command_consumes_arguments',None):
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603 self.get_option_dict(command)['args'] = ("command line", nargs)
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604 if nargs is not None:
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605 return []
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606
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607 return nargs
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608
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609 def get_cmdline_options(self):
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610 """Return a '{cmd: {opt:val}}' map of all command-line options
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611
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612 Option names are all long, but do not include the leading '--', and
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613 contain dashes rather than underscores. If the option doesn't take
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614 an argument (e.g. '--quiet'), the 'val' is 'None'.
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615
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616 Note that options provided by config files are intentionally excluded.
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617 """
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618
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619 d = {}
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620
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621 for cmd,opts in self.command_options.items():
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622
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623 for opt,(src,val) in opts.items():
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624
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625 if src != "command line":
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626 continue
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627
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628 opt = opt.replace('_','-')
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629
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630 if val==0:
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631 cmdobj = self.get_command_obj(cmd)
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632 neg_opt = self.negative_opt.copy()
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633 neg_opt.update(getattr(cmdobj,'negative_opt',{}))
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634 for neg,pos in neg_opt.items():
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635 if pos==opt:
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636 opt=neg
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637 val=None
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638 break
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639 else:
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640 raise AssertionError("Shouldn't be able to get here")
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641
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642 elif val==1:
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643 val = None
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644
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645 d.setdefault(cmd,{})[opt] = val
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646
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647 return d
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648
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649 def iter_distribution_names(self):
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650 """Yield all packages, modules, and extension names in distribution"""
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651
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652 for pkg in self.packages or ():
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653 yield pkg
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654
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655 for module in self.py_modules or ():
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656 yield module
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657
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658 for ext in self.ext_modules or ():
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659 if isinstance(ext,tuple):
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660 name, buildinfo = ext
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661 else:
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662 name = ext.name
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663 if name.endswith('module'):
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664 name = name[:-6]
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665 yield name
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666
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667 def handle_display_options(self, option_order):
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668 """If there were any non-global "display-only" options
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669 (--help-commands or the metadata display options) on the command
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670 line, display the requested info and return true; else return
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671 false.
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672 """
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673 import sys
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674
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675 if PY2 or self.help_commands:
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676 return _Distribution.handle_display_options(self, option_order)
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677
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678 # Stdout may be StringIO (e.g. in tests)
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679 import io
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680 if not isinstance(sys.stdout, io.TextIOWrapper):
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681 return _Distribution.handle_display_options(self, option_order)
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682
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683 # Don't wrap stdout if utf-8 is already the encoding. Provides
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684 # workaround for #334.
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685 if sys.stdout.encoding.lower() in ('utf-8', 'utf8'):
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686 return _Distribution.handle_display_options(self, option_order)
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687
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688 # Print metadata in UTF-8 no matter the platform
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689 encoding = sys.stdout.encoding
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690 errors = sys.stdout.errors
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691 newline = sys.platform != 'win32' and '\n' or None
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692 line_buffering = sys.stdout.line_buffering
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693
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694 sys.stdout = io.TextIOWrapper(
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695 sys.stdout.detach(), 'utf-8', errors, newline, line_buffering)
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696 try:
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697 return _Distribution.handle_display_options(self, option_order)
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698 finally:
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699 sys.stdout = io.TextIOWrapper(
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700 sys.stdout.detach(), encoding, errors, newline, line_buffering)
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701
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702
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703 # Install it throughout the distutils
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704 for module in distutils.dist, distutils.core, distutils.cmd:
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705 module.Distribution = Distribution
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706
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707
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708 class Feature:
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709 """
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710 **deprecated** -- The `Feature` facility was never completely implemented
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711 or supported, `has reported issues
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712 <https://bitbucket.org/pypa/setuptools/issue/58>`_ and will be removed in
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bcclaywell
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713 a future version.
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714
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715 A subset of the distribution that can be excluded if unneeded/wanted
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716
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717 Features are created using these keyword arguments:
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diff changeset
718
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719 'description' -- a short, human readable description of the feature, to
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720 be used in error messages, and option help messages.
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diff changeset
721
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722 'standard' -- if true, the feature is included by default if it is
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723 available on the current system. Otherwise, the feature is only
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parents:
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724 included if requested via a command line '--with-X' option, or if
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725 another included feature requires it. The default setting is 'False'.
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726
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727 'available' -- if true, the feature is available for installation on the
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728 current system. The default setting is 'True'.
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diff changeset
729
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730 'optional' -- if true, the feature's inclusion can be controlled from the
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731 command line, using the '--with-X' or '--without-X' options. If
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732 false, the feature's inclusion status is determined automatically,
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parents:
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733 based on 'availabile', 'standard', and whether any other feature
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734 requires it. The default setting is 'True'.
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parents:
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735
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736 'require_features' -- a string or sequence of strings naming features
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737 that should also be included if this feature is included. Defaults to
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738 empty list. May also contain 'Require' objects that should be
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parents:
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739 added/removed from the distribution.
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740
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741 'remove' -- a string or list of strings naming packages to be removed
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parents:
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742 from the distribution if this feature is *not* included. If the
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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parents:
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743 feature *is* included, this argument is ignored. This argument exists
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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parents:
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744 to support removing features that "crosscut" a distribution, such as
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parents:
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745 defining a 'tests' feature that removes all the 'tests' subpackages
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746 provided by other features. The default for this argument is an empty
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747 list. (Note: the named package(s) or modules must exist in the base
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748 distribution when the 'setup()' function is initially called.)
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749
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750 other keywords -- any other keyword arguments are saved, and passed to
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751 the distribution's 'include()' and 'exclude()' methods when the
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parents:
diff changeset
752 feature is included or excluded, respectively. So, for example, you
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diff changeset
753 could pass 'packages=["a","b"]' to cause packages 'a' and 'b' to be
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diff changeset
754 added or removed from the distribution as appropriate.
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diff changeset
755
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756 A feature must include at least one 'requires', 'remove', or other
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757 keyword argument. Otherwise, it can't affect the distribution in any way.
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758 Note also that you can subclass 'Feature' to create your own specialized
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759 feature types that modify the distribution in other ways when included or
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760 excluded. See the docstrings for the various methods here for more detail.
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761 Aside from the methods, the only feature attributes that distributions look
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762 at are 'description' and 'optional'.
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763 """
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764
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765 @staticmethod
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766 def warn_deprecated():
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767 warnings.warn(
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768 "Features are deprecated and will be removed in a future "
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diff changeset
769 "version. See http://bitbucket.org/pypa/setuptools/65.",
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770 DeprecationWarning,
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771 stacklevel=3,
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772 )
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773
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774 def __init__(self, description, standard=False, available=True,
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775 optional=True, require_features=(), remove=(), **extras):
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776 self.warn_deprecated()
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777
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778 self.description = description
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779 self.standard = standard
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780 self.available = available
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781 self.optional = optional
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782 if isinstance(require_features,(str,Require)):
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783 require_features = require_features,
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784
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785 self.require_features = [
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786 r for r in require_features if isinstance(r,str)
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787 ]
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788 er = [r for r in require_features if not isinstance(r,str)]
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789 if er: extras['require_features'] = er
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790
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791 if isinstance(remove,str):
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792 remove = remove,
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793 self.remove = remove
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794 self.extras = extras
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diff changeset
795
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796 if not remove and not require_features and not extras:
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797 raise DistutilsSetupError(
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798 "Feature %s: must define 'require_features', 'remove', or at least one"
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799 " of 'packages', 'py_modules', etc."
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800 )
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801
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802 def include_by_default(self):
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803 """Should this feature be included by default?"""
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804 return self.available and self.standard
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805
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806 def include_in(self,dist):
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807
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808 """Ensure feature and its requirements are included in distribution
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diff changeset
809
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810 You may override this in a subclass to perform additional operations on
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811 the distribution. Note that this method may be called more than once
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812 per feature, and so should be idempotent.
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diff changeset
813
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814 """
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815
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816 if not self.available:
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817 raise DistutilsPlatformError(
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818 self.description+" is required,"
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diff changeset
819 "but is not available on this platform"
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820 )
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821
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822 dist.include(**self.extras)
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823
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824 for f in self.require_features:
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825 dist.include_feature(f)
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826
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827 def exclude_from(self,dist):
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828
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829 """Ensure feature is excluded from distribution
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diff changeset
830
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831 You may override this in a subclass to perform additional operations on
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832 the distribution. This method will be called at most once per
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833 feature, and only after all included features have been asked to
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834 include themselves.
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835 """
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836
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837 dist.exclude(**self.extras)
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838
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839 if self.remove:
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840 for item in self.remove:
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841 dist.exclude_package(item)
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842
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843 def validate(self,dist):
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844
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845 """Verify that feature makes sense in context of distribution
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846
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847 This method is called by the distribution just before it parses its
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848 command line. It checks to ensure that the 'remove' attribute, if any,
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849 contains only valid package/module names that are present in the base
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850 distribution when 'setup()' is called. You may override it in a
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851 subclass to perform any other required validation of the feature
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852 against a target distribution.
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853 """
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854
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855 for item in self.remove:
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856 if not dist.has_contents_for(item):
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857 raise DistutilsSetupError(
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858 "%s wants to be able to remove %s, but the distribution"
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859 " doesn't contain any packages or modules under %s"
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860 % (self.description, item, item)
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861 )